1510–1520
National Gallery of Art, 1755
National Gallery of Art, 1937
National Gallery of Art, 1939
National Gallery of Art, 1903
National Gallery of Art, 1981
National Gallery of Art, 1896
Duveen Brothers, Inc., 1450
Kress Foundation, Samuel H., 1441
National Gallery of Art, 1879
National Gallery of Art, 1657
![Sheet of Studies [recto and verso]](https://api.nga.gov/iiif/b671aa80-e9a2-4e3e-976e-de933ffaa32e/full/843,/0/default.jpg)
![Nude Youth Lying before a Rock [reverse]](https://api.nga.gov/iiif/36a7feaf-ce60-4f34-96f1-49accdfb8b12/full/843,/0/default.jpg)
